Got the Shure SE115 last week and used the default medium size black foam sleeves for a few days, but found they are just too big for my ears.
Then I change to small size today, now the sleeves can fit perfectly in my ear and the isolation is excellent. However, I found the sound also changed as well. Bass are stronger than before and high are almost dull, compare with previous the high are airy and detail.
Is it because of better isolation which give me more bass and less high??
Any help would be appreciated
ps. already burn in for around 15 hours